AF0409C81BBW2 2-Ball Piston Pump & Wash Pump Package

9:1 Ratio
4 1/4" Air Motor
2.8 GPM (10.5 LPM) Max Flow
Max Fluid: 1,350 psi


4 1/4"

Available Models

Pump Model**  Lower Pump Material Container  Suitability Plunger Material Upper  Packings Lower  Packings Lower Pump Model Pump Service  Kit
AF0409C81BBW2 Stainless Steel    Stub 316 Stainless Steel Buna "N" Buna "N" 1875C81BBW2 K1875C81BB00

**Add “-1” to Model No. for Ball Valve Regulator

Simply Versatile

2-ball pumps are among the most versatile in the ARO line. They are capable of handling applications from simple transfer to the extrusion of low- to medium- viscosity materials up to 100,000 centipoise (cPs) with fluid delivery up to 18.1 gpm (68.6 L/min).

Applications advantages of 2-balls:

Spray: 2-ball pumps deliver the constant flow rate and pressure needed for consistent and efficient coatings applications
Transfer & Supply: Depending on the model, some 2-ball pumps can achieve flow rates up to 18.1 gpm, providing dependable results
Extrusion: 2-ball pumps generate pressure to handle extrusion of low-to medium-viscosity
Lubrication: ARO 2-balls pumps provide the flow and pressure required for moving light oils and grease lubricants
High Pressure Cleaning: ARO Wash Pump Packages are portable and offer the the right option for industrial cleaning applications

Materials advantages of 2-balls:

  • Sheer sensitive materials: ARO 2-ball pumps minimize friction points to prevent fluid shear, when compared to other similar pumping technologies
  • Abrasive and high solid materials: ARO 2-ball pump minimize friction points and allow smooth passages to maintain fluid consistency
  • Optional ceramic coating provides an even stronger defense against highly abrasive fluids like paint and glass-filled sealer


Ratio 9:1
Stroke 4” (10.2 cm)
Material Inlet Barbed
Material Outlet 3/4” NPT(F)
Air Inlet (female) 1/2” NPT(F)
Air Inlet Pressure Range psi (bar) 0 - 150 (0 - 10.3)
Fluid Pressure Range psi (bar) 0 -1350 (0 - 93.1)
Max Cycles/Minute 60.0
Displacement/Cycle cu in (cm3) 11.0 (180.2)
Cycles/gal (L) 21 (5.5)
Flow @ 60 Cycles gpm (L/min) 2.9 (10.8)
Noise Level @ 60 psi dBA 89.2
Weight* lb (kg) 35 (15.9)
AF0409C Fluid Curves

Dimensions - 5-Gallon Unit

A* in (mm) 34.12 (866.55)
B in (mm) 17.78 (451.7)
C in (mm) 11(279.4)

Wash Pump Package

Model No.  Package Type Pump Model Bracket Number Suction Tube Control Handle Spray Tip


5 Gallon Wash Package






WP0409C81XXXXXXX ARO Wash Pump Package